Apparatus for burning soft coal.



I v PA'TENTBD MAR. a, 1904.

R'RAKRR, A APPARATUS FOR BURNING som' GOAL.

APPLICATION F ILBD JUNE 29, 1903.

H0 MODEL.

f 6 0 o --l I I I I I I IIIIIIIIIv THE NDRIIS PETERS cu. PHoTo-ummwnsnmn'ron. D. Q

Patented March 8, 1904.

PATENT. 0FFICE.

ROBERT BAKER, OF HAMILTON, CANADA;

APPARATUS FOR BURNING SOFT COAL.

SPECIFICATION forming part of Letters Patent No. 753,836, dated March 8,1904. Application filed June 29, 1903; Serial 170. 163,494. (No model.)

To all whom it mag concern.-

Be it known that 1, ROBERT BAKER, a citizen of Canada, residing atHamilton, in the county of Wentworth, in the Province of On- .tario,Canada, have invented certain new and means for facilitating thecombustion of the gas in the fire-box, whereby the heat therefrom may bedirectedto its desired place.

The objects of my invention are, first, to provide an apparatus adaptedto extract and burn'gas and smoke from soft coal; second,

' to provide means whereby gas and smoke from soft coal may be utilizedand generated into heatfor heating purposes, and, third, to afiordfacilities whereby the apparatus may be adapted to perform its functionsin connection with boilers, furnaces, stoves, and other heat-generatingarticles. I attain these objects by the mechanism illustrated in theaccompanying drawings, in which- Figure 1 is a sectional elevation ofthe firebox part of the apparatus, showing-the attached gas and'smokedistributers in section communicating with thefire-box and attached tothe inclined sides thereof, and the lower part of the gas-generator.Fig. 2 is a longitudinal sectional side elevation of the apparatus,showing the gas and smoke distributer in broken lines. Fig. 3 is a planof the same.

Similar characters refer to similar parts throughout the several views.In the drawings the outline of a boiler is indicated byA and issubstantially supported by walls B in desired places. The fire-boxcomprises the bottom 2, with inclined sides or walls 3 and horizontalsupporting-flanges 4, extending from the upper part of the inclinedsides 3. The fire-box is located in suitable position immediatelyunderneath the boiler A to heat said boiler.

5 is the gasgenerator adjoining the rear end of thefirebox andforming apart of the same. The gas-generator and the fire-box are connected bythe inclined floor 6, which inclines from the fire-box to the lowestpart of the gas-generator 5. The lower part of the gasgenerator extendsrearward in tubular. V V

shape and forms a soft-coal receptacle 7, provided With a coal-hopper 8on the end part thereof to-feed the fire-box. The coal-receptacle 7 isadapted to support a spiral worm 9 on its central shaft 10, which,together with its worm 9, is adapted to revolve in the end bearing-12 ofthe receptacle and in the interior arm-bearing 13 at the inner end ofthe receptacle.

.worm 9 contracted in proportion, so that no possible obstruction to thepassag'e'of the coal through the receptacle 7 may take place.

The bearing 13 may be omitted, providing the bearing 12 is extended andthe 14 is a pulley secured on, the'sh'aft 10 to revolve said shaft andworm. When fine coal,

coal-dust, or slack-coal is dumped into the hopper 8 and the worm 9revolved, the coal is gradually carried through the receptacle 7 bymeans of the worm acting upon the coal, which is at the same timecarried on the floor of the gas-generator 5 and gradually up theinclined floor 6 of thefire-box 2 and into said fire-box to be consumedand heat, gas, and smoke generated therefrom. The'floor 2 of thefire-box has a number of air-ducts 15, which communicate'with the flue16, which may have a suitable ash-receiver connected thereto. Theair-ducts 15' distribute air into the fire-box in order to facilitatecombustion of the gaseous elements of the coal and burn I the same,together withthe gases and smoke The upper part of the gas-generator 5has extracted from the coal and returned through Ice a gas and smokechamber 19, which receives gas and smoke from the gas-generator 5 bymeans of the apertures 20, which communicate with the gas-generator 5and the gas and smoke chamber 19. Suitable gas and smoke conductingpipes 21 connect the sides of the gas-chamber 19 at 22 (shown in Fig. 2of the drawings) and with the end of the distributers 17 at 28. (Shownin Fig. 1 of the drawings.)

The pipes 21 form a junction at a convenient place, and at said junctiona fan-casing 24 is provided and connected to said pipes and communicateswith the pipes. A fan 25 is suitably journaled in the casing 2 1 and isadapted to revolve therein by suitable means connected with thefan-shaft 26. 28 is a suitable cover on the casing 24. (Shown in Fig. 2of the drawings and removed in Fig. 3 of the drawings to show the fan25.)

When the apparatus is in operation, the soft coal in the fire-box isburning, and the gaseous elements, together with the smoke therefrom,pass to the gas-generator 5 and through the apertures 20 and into thegas-chamber 19, thence through the conducting-pipes 21, and into thefan-casing 24: of said pipes. At this time the fan 25 is revolving, andthe suction caused by the fan draws the said elements through the pipesto the fan, as set forth, and propels said elements from the fan-casingto the distributers 17, thence through the apertures 18, and into thefire-box, there to be consumed by combustion into heat to serve thepurposes'as set forth.

It will readily be seen how that this invention may be applied tofurnaces, stoves, and boilers in general and to various kinds of heatingapparatuses for heating purposes where soft coal is required.

Various changes in the form, proportion, and minor details of thisinvention may be resorted to without departing from the spirit and scopethereof. Hence What I claim as my invention, and desire to secure byLetters Patent, is-- 1. In an apparatus for burning soft coal, thecombination of a fire-box with inclined sides, a gas-generator connectedtherewith by a rearinclined floor, and opening into the fire-box, acoal-receptacle in rear of the generator and communicating therewith, ahopper on the receptacle, a gas and smoke chamber on the generator gasand smoke apertures communicating with the generator and the chamber,gas and smoke distributers connected to the inclined sides of thefire-box and communicating therewith, means communicating with the gasand smoke chamber and said distributers, substantially as described andset forth.

2. In an apparatus for burning soft coal, the combination of a suitablefire-box with inclined sides, air-ducts in the floor thereof of agasgenerator opening into the rear part of said fire-box by means of aninclined floor, a softcoal receptacle at the rear end of thegas-generator and communicating therewith, and means for directing thecoal from said receptacle into said generator and up the inclined fliiorinto the fire-box, substantially as described and set forth.

3. In an apparatus for burning soft coal, in combination, a fire-boxwith inclined sides, airducts in the floor thereof; a gas-generator, aninclined floor connecting said generator with the rear part of thefire-box, a gas-chamber on the generator and communicating therewith, acoal-receiver extending from the rear end of the generator, gas andsmoke distributers connected to the outer part of said inclined sides ofthe fire-box, and means connecting with the gas and smoke chamber, and

said gas and smoke distributers, substantially as described and setforth.

4. In an apparatus for burning soft coal, a fire-box with inclinedsides, air-ducts in the floor thereof, a gas-generator, an inclinedfloor extending from the rear part of the floor of the fire-box to thegenerator and communicating" therewith, gas and smoke distributersconnected to the outer part of said inclined sides of the fire-box andcommunicating with the fire-box, a gas and smoke chamber on thegas-generator and communicating therewith, a coal-receptacle connectedto the rear end of the generator and communicating therewith, meansconnecting the gas-chamber with said distributers, and means forpropelling gas and smoke from the generator to the distributers,substantially as described and set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

ROBERT BAKER. Witnesses:

JOHN H. HENDRY, W. S. MCBRAYNE.

